Commit | Line | Data |
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7f7f5316 AF |
1 | /* |
2 | * drivers/net/gianfar_sysfs.c | |
3 | * | |
4 | * Gianfar Ethernet Driver | |
5 | * This driver is designed for the non-CPM ethernet controllers | |
6 | * on the 85xx and 83xx family of integrated processors | |
7 | * Based on 8260_io/fcc_enet.c | |
8 | * | |
9 | * Author: Andy Fleming | |
b56d55b6 | 10 | * Maintainer: Kumar Gala (galak@kernel.crashing.org) |
7f7f5316 AF |
11 | * |
12 | * Copyright (c) 2002-2005 Freescale Semiconductor, Inc. | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify it | |
15 | * under the terms of the GNU General Public License as published by the | |
16 | * Free Software Foundation; either version 2 of the License, or (at your | |
17 | * option) any later version. | |
18 | * | |
19 | * Sysfs file creation and management | |
20 | */ | |
21 | ||
7f7f5316 | 22 | #include <linux/kernel.h> |
7f7f5316 AF |
23 | #include <linux/string.h> |
24 | #include <linux/errno.h> | |
25 | #include <linux/unistd.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/etherdevice.h> | |
30 | #include <linux/spinlock.h> | |
31 | #include <linux/mm.h> | |
32 | #include <linux/device.h> | |
33 | ||
34 | #include <asm/uaccess.h> | |
35 | #include <linux/module.h> | |
7f7f5316 AF |
36 | |
37 | #include "gianfar.h" | |
38 | ||
4409d281 KG |
39 | static ssize_t gfar_show_bd_stash(struct device *dev, |
40 | struct device_attribute *attr, char *buf) | |
7f7f5316 | 41 | { |
4409d281 | 42 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 | 43 | |
4409d281 | 44 | return sprintf(buf, "%s\n", priv->bd_stash_en ? "on" : "off"); |
7f7f5316 AF |
45 | } |
46 | ||
4409d281 KG |
47 | static ssize_t gfar_set_bd_stash(struct device *dev, |
48 | struct device_attribute *attr, | |
49 | const char *buf, size_t count) | |
7f7f5316 | 50 | { |
4409d281 | 51 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
52 | int new_setting = 0; |
53 | u32 temp; | |
54 | unsigned long flags; | |
55 | ||
4d7902f2 AF |
56 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BD_STASHING)) |
57 | return count; | |
58 | ||
7f7f5316 | 59 | /* Find out the new setting */ |
4409d281 | 60 | if (!strncmp("on", buf, count - 1) || !strncmp("1", buf, count - 1)) |
7f7f5316 | 61 | new_setting = 1; |
4409d281 KG |
62 | else if (!strncmp("off", buf, count - 1) |
63 | || !strncmp("0", buf, count - 1)) | |
7f7f5316 AF |
64 | new_setting = 0; |
65 | else | |
66 | return count; | |
67 | ||
fef6108d | 68 | spin_lock_irqsave(&priv->rxlock, flags); |
7f7f5316 AF |
69 | |
70 | /* Set the new stashing value */ | |
71 | priv->bd_stash_en = new_setting; | |
72 | ||
73 | temp = gfar_read(&priv->regs->attr); | |
6aa20a22 | 74 | |
7f7f5316 AF |
75 | if (new_setting) |
76 | temp |= ATTR_BDSTASH; | |
77 | else | |
78 | temp &= ~(ATTR_BDSTASH); | |
79 | ||
80 | gfar_write(&priv->regs->attr, temp); | |
81 | ||
fef6108d | 82 | spin_unlock_irqrestore(&priv->rxlock, flags); |
7f7f5316 AF |
83 | |
84 | return count; | |
85 | } | |
86 | ||
b2f66d18 | 87 | static DEVICE_ATTR(bd_stash, 0644, gfar_show_bd_stash, gfar_set_bd_stash); |
35a84fdc | 88 | |
4409d281 KG |
89 | static ssize_t gfar_show_rx_stash_size(struct device *dev, |
90 | struct device_attribute *attr, char *buf) | |
7f7f5316 | 91 | { |
4409d281 | 92 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
93 | |
94 | return sprintf(buf, "%d\n", priv->rx_stash_size); | |
95 | } | |
96 | ||
4409d281 KG |
97 | static ssize_t gfar_set_rx_stash_size(struct device *dev, |
98 | struct device_attribute *attr, | |
99 | const char *buf, size_t count) | |
7f7f5316 | 100 | { |
4409d281 | 101 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
102 | unsigned int length = simple_strtoul(buf, NULL, 0); |
103 | u32 temp; | |
104 | unsigned long flags; | |
105 | ||
4d7902f2 AF |
106 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BUF_STASHING)) |
107 | return count; | |
108 | ||
fef6108d | 109 | spin_lock_irqsave(&priv->rxlock, flags); |
7f7f5316 | 110 | if (length > priv->rx_buffer_size) |
f162b9d5 | 111 | goto out; |
7f7f5316 AF |
112 | |
113 | if (length == priv->rx_stash_size) | |
f162b9d5 | 114 | goto out; |
7f7f5316 AF |
115 | |
116 | priv->rx_stash_size = length; | |
117 | ||
118 | temp = gfar_read(&priv->regs->attreli); | |
119 | temp &= ~ATTRELI_EL_MASK; | |
120 | temp |= ATTRELI_EL(length); | |
121 | gfar_write(&priv->regs->attreli, temp); | |
122 | ||
123 | /* Turn stashing on/off as appropriate */ | |
124 | temp = gfar_read(&priv->regs->attr); | |
125 | ||
126 | if (length) | |
127 | temp |= ATTR_BUFSTASH; | |
128 | else | |
129 | temp &= ~(ATTR_BUFSTASH); | |
130 | ||
131 | gfar_write(&priv->regs->attr, temp); | |
132 | ||
f162b9d5 | 133 | out: |
fef6108d | 134 | spin_unlock_irqrestore(&priv->rxlock, flags); |
7f7f5316 AF |
135 | |
136 | return count; | |
137 | } | |
138 | ||
b2f66d18 AV |
139 | static DEVICE_ATTR(rx_stash_size, 0644, gfar_show_rx_stash_size, |
140 | gfar_set_rx_stash_size); | |
35a84fdc | 141 | |
7f7f5316 | 142 | /* Stashing will only be enabled when rx_stash_size != 0 */ |
4409d281 KG |
143 | static ssize_t gfar_show_rx_stash_index(struct device *dev, |
144 | struct device_attribute *attr, | |
145 | char *buf) | |
7f7f5316 | 146 | { |
4409d281 | 147 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
148 | |
149 | return sprintf(buf, "%d\n", priv->rx_stash_index); | |
150 | } | |
151 | ||
4409d281 KG |
152 | static ssize_t gfar_set_rx_stash_index(struct device *dev, |
153 | struct device_attribute *attr, | |
154 | const char *buf, size_t count) | |
7f7f5316 | 155 | { |
4409d281 | 156 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
157 | unsigned short index = simple_strtoul(buf, NULL, 0); |
158 | u32 temp; | |
159 | unsigned long flags; | |
160 | ||
4d7902f2 AF |
161 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BUF_STASHING)) |
162 | return count; | |
163 | ||
fef6108d | 164 | spin_lock_irqsave(&priv->rxlock, flags); |
7f7f5316 | 165 | if (index > priv->rx_stash_size) |
f162b9d5 | 166 | goto out; |
7f7f5316 AF |
167 | |
168 | if (index == priv->rx_stash_index) | |
f162b9d5 | 169 | goto out; |
7f7f5316 AF |
170 | |
171 | priv->rx_stash_index = index; | |
172 | ||
173 | temp = gfar_read(&priv->regs->attreli); | |
174 | temp &= ~ATTRELI_EI_MASK; | |
175 | temp |= ATTRELI_EI(index); | |
176 | gfar_write(&priv->regs->attreli, flags); | |
177 | ||
f162b9d5 | 178 | out: |
fef6108d | 179 | spin_unlock_irqrestore(&priv->rxlock, flags); |
7f7f5316 AF |
180 | |
181 | return count; | |
182 | } | |
183 | ||
b2f66d18 AV |
184 | static DEVICE_ATTR(rx_stash_index, 0644, gfar_show_rx_stash_index, |
185 | gfar_set_rx_stash_index); | |
35a84fdc | 186 | |
4409d281 KG |
187 | static ssize_t gfar_show_fifo_threshold(struct device *dev, |
188 | struct device_attribute *attr, | |
189 | char *buf) | |
7f7f5316 | 190 | { |
4409d281 | 191 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
192 | |
193 | return sprintf(buf, "%d\n", priv->fifo_threshold); | |
194 | } | |
195 | ||
4409d281 KG |
196 | static ssize_t gfar_set_fifo_threshold(struct device *dev, |
197 | struct device_attribute *attr, | |
198 | const char *buf, size_t count) | |
7f7f5316 | 199 | { |
4409d281 | 200 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
201 | unsigned int length = simple_strtoul(buf, NULL, 0); |
202 | u32 temp; | |
203 | unsigned long flags; | |
204 | ||
205 | if (length > GFAR_MAX_FIFO_THRESHOLD) | |
206 | return count; | |
207 | ||
fef6108d | 208 | spin_lock_irqsave(&priv->txlock, flags); |
7f7f5316 AF |
209 | |
210 | priv->fifo_threshold = length; | |
211 | ||
212 | temp = gfar_read(&priv->regs->fifo_tx_thr); | |
213 | temp &= ~FIFO_TX_THR_MASK; | |
214 | temp |= length; | |
215 | gfar_write(&priv->regs->fifo_tx_thr, temp); | |
216 | ||
fef6108d | 217 | spin_unlock_irqrestore(&priv->txlock, flags); |
7f7f5316 AF |
218 | |
219 | return count; | |
220 | } | |
221 | ||
b2f66d18 AV |
222 | static DEVICE_ATTR(fifo_threshold, 0644, gfar_show_fifo_threshold, |
223 | gfar_set_fifo_threshold); | |
35a84fdc | 224 | |
4409d281 KG |
225 | static ssize_t gfar_show_fifo_starve(struct device *dev, |
226 | struct device_attribute *attr, char *buf) | |
7f7f5316 | 227 | { |
4409d281 | 228 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
229 | |
230 | return sprintf(buf, "%d\n", priv->fifo_starve); | |
231 | } | |
232 | ||
4409d281 KG |
233 | static ssize_t gfar_set_fifo_starve(struct device *dev, |
234 | struct device_attribute *attr, | |
235 | const char *buf, size_t count) | |
7f7f5316 | 236 | { |
4409d281 | 237 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
238 | unsigned int num = simple_strtoul(buf, NULL, 0); |
239 | u32 temp; | |
240 | unsigned long flags; | |
241 | ||
242 | if (num > GFAR_MAX_FIFO_STARVE) | |
243 | return count; | |
244 | ||
fef6108d | 245 | spin_lock_irqsave(&priv->txlock, flags); |
7f7f5316 AF |
246 | |
247 | priv->fifo_starve = num; | |
248 | ||
249 | temp = gfar_read(&priv->regs->fifo_tx_starve); | |
250 | temp &= ~FIFO_TX_STARVE_MASK; | |
251 | temp |= num; | |
252 | gfar_write(&priv->regs->fifo_tx_starve, temp); | |
253 | ||
fef6108d | 254 | spin_unlock_irqrestore(&priv->txlock, flags); |
7f7f5316 AF |
255 | |
256 | return count; | |
257 | } | |
258 | ||
b2f66d18 AV |
259 | static DEVICE_ATTR(fifo_starve, 0644, gfar_show_fifo_starve, |
260 | gfar_set_fifo_starve); | |
35a84fdc | 261 | |
4409d281 KG |
262 | static ssize_t gfar_show_fifo_starve_off(struct device *dev, |
263 | struct device_attribute *attr, | |
264 | char *buf) | |
7f7f5316 | 265 | { |
4409d281 | 266 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
267 | |
268 | return sprintf(buf, "%d\n", priv->fifo_starve_off); | |
269 | } | |
270 | ||
4409d281 KG |
271 | static ssize_t gfar_set_fifo_starve_off(struct device *dev, |
272 | struct device_attribute *attr, | |
273 | const char *buf, size_t count) | |
7f7f5316 | 274 | { |
4409d281 | 275 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
276 | unsigned int num = simple_strtoul(buf, NULL, 0); |
277 | u32 temp; | |
278 | unsigned long flags; | |
279 | ||
280 | if (num > GFAR_MAX_FIFO_STARVE_OFF) | |
281 | return count; | |
282 | ||
fef6108d | 283 | spin_lock_irqsave(&priv->txlock, flags); |
7f7f5316 AF |
284 | |
285 | priv->fifo_starve_off = num; | |
286 | ||
287 | temp = gfar_read(&priv->regs->fifo_tx_starve_shutoff); | |
288 | temp &= ~FIFO_TX_STARVE_OFF_MASK; | |
289 | temp |= num; | |
290 | gfar_write(&priv->regs->fifo_tx_starve_shutoff, temp); | |
291 | ||
fef6108d | 292 | spin_unlock_irqrestore(&priv->txlock, flags); |
7f7f5316 AF |
293 | |
294 | return count; | |
295 | } | |
296 | ||
b2f66d18 AV |
297 | static DEVICE_ATTR(fifo_starve_off, 0644, gfar_show_fifo_starve_off, |
298 | gfar_set_fifo_starve_off); | |
35a84fdc | 299 | |
7f7f5316 AF |
300 | void gfar_init_sysfs(struct net_device *dev) |
301 | { | |
302 | struct gfar_private *priv = netdev_priv(dev); | |
35a84fdc | 303 | int rc; |
7f7f5316 AF |
304 | |
305 | /* Initialize the default values */ | |
7f7f5316 AF |
306 | priv->fifo_threshold = DEFAULT_FIFO_TX_THR; |
307 | priv->fifo_starve = DEFAULT_FIFO_TX_STARVE; | |
308 | priv->fifo_starve_off = DEFAULT_FIFO_TX_STARVE_OFF; | |
7f7f5316 AF |
309 | |
310 | /* Create our sysfs files */ | |
35a84fdc GL |
311 | rc = device_create_file(&dev->dev, &dev_attr_bd_stash); |
312 | rc |= device_create_file(&dev->dev, &dev_attr_rx_stash_size); | |
313 | rc |= device_create_file(&dev->dev, &dev_attr_rx_stash_index); | |
314 | rc |= device_create_file(&dev->dev, &dev_attr_fifo_threshold); | |
315 | rc |= device_create_file(&dev->dev, &dev_attr_fifo_starve); | |
316 | rc |= device_create_file(&dev->dev, &dev_attr_fifo_starve_off); | |
317 | if (rc) | |
318 | dev_err(&dev->dev, "Error creating gianfar sysfs files.\n"); | |
7f7f5316 | 319 | } |